./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:15:38,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:15:38,470 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 22:15:38,503 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:15:38,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:15:38,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:15:38,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:15:38,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:15:38,557 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:15:38,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:15:38,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:15:38,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:15:38,562 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:15:38,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:15:38,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:15:38,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:15:38,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:15:38,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:15:38,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:15:38,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:15:38,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:15:38,570 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:15:38,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:15:38,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:15:38,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:15:38,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:15:38,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:15:38,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:15:38,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:15:38,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:15:38,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:15:38,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:15:38,576 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:15:38,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:15:38,577 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:15:38,577 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:15:38,577 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 [2023-11-06 22:15:38,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:15:38,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:15:38,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:15:38,914 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:15:38,915 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:15:38,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2023-11-06 22:15:41,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:15:42,561 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:15:42,562 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2023-11-06 22:15:42,605 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/data/c5dde4246/f53163f075514bce8ec1987501fb0e20/FLAGf927378d5 [2023-11-06 22:15:42,625 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/data/c5dde4246/f53163f075514bce8ec1987501fb0e20 [2023-11-06 22:15:42,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:15:42,633 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:15:42,637 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:15:42,638 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:15:42,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:15:42,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:42" (1/1) ... [2023-11-06 22:15:42,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ec8fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:42, skipping insertion in model container [2023-11-06 22:15:42,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:42" (1/1) ... [2023-11-06 22:15:42,784 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:15:43,092 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2023-11-06 22:15:43,102 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2023-11-06 22:15:44,334 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:44,335 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:44,336 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:44,336 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:44,338 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:44,350 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:44,355 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:44,358 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:44,361 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:44,863 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 22:15:44,865 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 22:15:44,866 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 22:15:44,867 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 22:15:44,869 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 22:15:44,870 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 22:15:44,871 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 22:15:44,872 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 22:15:44,873 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 22:15:44,874 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 22:15:45,145 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:45,145 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:45,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:15:45,300 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:15:45,326 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2023-11-06 22:15:45,327 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2023-11-06 22:15:45,425 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:45,426 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:45,428 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:45,429 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:45,429 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:45,441 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:45,444 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:45,447 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:45,450 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:45,504 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 22:15:45,506 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 22:15:45,507 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 22:15:45,509 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 22:15:45,512 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 22:15:45,513 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 22:15:45,513 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 22:15:45,514 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 22:15:45,514 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 22:15:45,515 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 22:15:45,543 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:45,544 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:15:45,550 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2023-11-06 22:15:45,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:15:45,850 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,850 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,850 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,857 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,858 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,858 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,859 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,859 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,859 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,859 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,859 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,860 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,860 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,860 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,861 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:45,869 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:15:45,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:45 WrapperNode [2023-11-06 22:15:45,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:15:45,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:15:45,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:15:45,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:15:45,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:45" (1/1) ... [2023-11-06 22:15:45,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:45" (1/1) ... [2023-11-06 22:15:46,092 INFO L138 Inliner]: procedures = 688, calls = 1537, calls flagged for inlining = 55, calls inlined = 11, statements flattened = 718 [2023-11-06 22:15:46,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:15:46,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:15:46,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:15:46,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:15:46,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:45" (1/1) ... [2023-11-06 22:15:46,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:45" (1/1) ... [2023-11-06 22:15:46,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:45" (1/1) ... [2023-11-06 22:15:46,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:45" (1/1) ... [2023-11-06 22:15:46,161 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:45" (1/1) ... [2023-11-06 22:15:46,167 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:45" (1/1) ... [2023-11-06 22:15:46,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:45" (1/1) ... [2023-11-06 22:15:46,197 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:45" (1/1) ... [2023-11-06 22:15:46,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:15:46,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:15:46,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:15:46,218 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:15:46,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:45" (1/1) ... [2023-11-06 22:15:46,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:15:46,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:46,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:46,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:15:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-06 22:15:46,301 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-06 22:15:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:15:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-06 22:15:46,301 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-06 22:15:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-06 22:15:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-06 22:15:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-06 22:15:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-06 22:15:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:15:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-06 22:15:46,304 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-06 22:15:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:15:46,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:15:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:15:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:15:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-06 22:15:46,305 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-06 22:15:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:15:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:15:46,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:15:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-06 22:15:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-06 22:15:46,307 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-06 22:15:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-06 22:15:46,307 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-06 22:15:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-06 22:15:46,307 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-06 22:15:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-06 22:15:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-06 22:15:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-06 22:15:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:15:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:15:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:15:46,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:15:46,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:15:46,310 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-06 22:15:46,310 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-06 22:15:46,310 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-06 22:15:46,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-06 22:15:46,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:15:46,310 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2023-11-06 22:15:46,310 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2023-11-06 22:15:46,311 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-06 22:15:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-06 22:15:46,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:15:46,697 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:15:46,701 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:15:47,954 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:15:47,968 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:15:47,969 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:15:47,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:47 BoogieIcfgContainer [2023-11-06 22:15:47,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:15:47,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:15:47,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:15:47,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:15:47,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:15:42" (1/3) ... [2023-11-06 22:15:47,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4550d97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:47, skipping insertion in model container [2023-11-06 22:15:47,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:45" (2/3) ... [2023-11-06 22:15:47,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4550d97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:47, skipping insertion in model container [2023-11-06 22:15:47,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:47" (3/3) ... [2023-11-06 22:15:47,985 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_top_harness.i [2023-11-06 22:15:48,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:15:48,006 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:15:48,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:15:48,100 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27ce0ba2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:15:48,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:15:48,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 192 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 124 states have internal predecessors, (153), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-06 22:15:48,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-06 22:15:48,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:48,141 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:48,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:48,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:48,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2080692148, now seen corresponding path program 1 times [2023-11-06 22:15:48,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:48,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019938096] [2023-11-06 22:15:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:48,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:15:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:48,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:15:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:48,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 22:15:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:48,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:15:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:48,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:15:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:48,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:15:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:15:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:15:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:15:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-06 22:15:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:15:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 22:15:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 22:15:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:15:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 22:15:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-06 22:15:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-06 22:15:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:15:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-06 22:15:49,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:49,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019938096] [2023-11-06 22:15:49,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019938096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:49,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:49,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:15:49,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641274172] [2023-11-06 22:15:49,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:49,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:15:49,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:49,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:15:49,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:15:49,329 INFO L87 Difference]: Start difference. First operand has 192 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 124 states have internal predecessors, (153), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 22:15:50,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:50,325 INFO L93 Difference]: Finished difference Result 443 states and 653 transitions. [2023-11-06 22:15:50,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:15:50,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 118 [2023-11-06 22:15:50,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:50,353 INFO L225 Difference]: With dead ends: 443 [2023-11-06 22:15:50,354 INFO L226 Difference]: Without dead ends: 257 [2023-11-06 22:15:50,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:15:50,371 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 322 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:50,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 319 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:15:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-06 22:15:50,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 187. [2023-11-06 22:15:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 119 states have (on average 1.2100840336134453) internal successors, (144), 120 states have internal predecessors, (144), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-06 22:15:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 243 transitions. [2023-11-06 22:15:50,482 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 243 transitions. Word has length 118 [2023-11-06 22:15:50,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:50,483 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 243 transitions. [2023-11-06 22:15:50,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 22:15:50,484 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 243 transitions. [2023-11-06 22:15:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-06 22:15:50,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:50,488 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:50,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:15:50,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:50,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:50,490 INFO L85 PathProgramCache]: Analyzing trace with hash 440490954, now seen corresponding path program 1 times [2023-11-06 22:15:50,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:50,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048182395] [2023-11-06 22:15:50,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:50,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:15:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:15:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 22:15:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:15:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:15:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:15:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:15:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:15:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:15:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-06 22:15:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:15:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 22:15:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 22:15:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:15:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 22:15:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-06 22:15:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-06 22:15:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:15:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-06 22:15:51,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:51,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048182395] [2023-11-06 22:15:51,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048182395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:51,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:51,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:15:51,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533687539] [2023-11-06 22:15:51,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:51,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:15:51,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:51,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:15:51,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:15:51,401 INFO L87 Difference]: Start difference. First operand 187 states and 243 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-06 22:15:52,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:52,510 INFO L93 Difference]: Finished difference Result 407 states and 561 transitions. [2023-11-06 22:15:52,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:15:52,510 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 118 [2023-11-06 22:15:52,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:52,515 INFO L225 Difference]: With dead ends: 407 [2023-11-06 22:15:52,515 INFO L226 Difference]: Without dead ends: 257 [2023-11-06 22:15:52,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:15:52,517 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 392 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:52,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 585 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 22:15:52,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-06 22:15:52,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 187. [2023-11-06 22:15:52,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 120 states have internal predecessors, (143), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-06 22:15:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 242 transitions. [2023-11-06 22:15:52,549 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 242 transitions. Word has length 118 [2023-11-06 22:15:52,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:52,549 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 242 transitions. [2023-11-06 22:15:52,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-06 22:15:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 242 transitions. [2023-11-06 22:15:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-06 22:15:52,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:52,553 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:52,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:15:52,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:52,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:52,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1705196580, now seen corresponding path program 1 times [2023-11-06 22:15:52,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:52,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878657692] [2023-11-06 22:15:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:52,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:15:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:15:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 22:15:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:15:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:15:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:15:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:15:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:15:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:15:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-06 22:15:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:15:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 22:15:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:15:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-06 22:15:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:15:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-06 22:15:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-06 22:15:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-06 22:15:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-06 22:15:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-06 22:15:53,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:53,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878657692] [2023-11-06 22:15:53,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878657692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:15:53,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351511551] [2023-11-06 22:15:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:53,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:53,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:53,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:53,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:15:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 2393 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:15:54,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-06 22:15:54,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:54,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351511551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:54,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:15:54,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-06 22:15:54,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172388342] [2023-11-06 22:15:54,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:54,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:15:54,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:54,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:15:54,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:15:54,563 INFO L87 Difference]: Start difference. First operand 187 states and 242 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-06 22:15:54,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:54,814 INFO L93 Difference]: Finished difference Result 356 states and 472 transitions. [2023-11-06 22:15:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:15:54,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 126 [2023-11-06 22:15:54,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:54,818 INFO L225 Difference]: With dead ends: 356 [2023-11-06 22:15:54,818 INFO L226 Difference]: Without dead ends: 189 [2023-11-06 22:15:54,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:15:54,824 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 78 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:54,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1292 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:15:54,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-06 22:15:54,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-11-06 22:15:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 120 states have (on average 1.2) internal successors, (144), 122 states have internal predecessors, (144), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2023-11-06 22:15:54,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 249 transitions. [2023-11-06 22:15:54,868 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 249 transitions. Word has length 126 [2023-11-06 22:15:54,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:54,870 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 249 transitions. [2023-11-06 22:15:54,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-06 22:15:54,870 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 249 transitions. [2023-11-06 22:15:54,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-06 22:15:54,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:54,874 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:54,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:55,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:55,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:55,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:55,085 INFO L85 PathProgramCache]: Analyzing trace with hash -371731420, now seen corresponding path program 1 times [2023-11-06 22:15:55,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:55,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882573857] [2023-11-06 22:15:55,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:55,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:55,202 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:15:55,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650938162] [2023-11-06 22:15:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:55,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:55,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:55,204 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:55,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:15:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:55,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:15:55,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-06 22:15:55,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:55,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:55,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882573857] [2023-11-06 22:15:55,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:15:55,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650938162] [2023-11-06 22:15:55,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650938162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:55,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:55,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:15:55,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276069666] [2023-11-06 22:15:55,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:55,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:15:55,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:55,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:15:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:15:55,856 INFO L87 Difference]: Start difference. First operand 189 states and 249 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-06 22:15:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:55,903 INFO L93 Difference]: Finished difference Result 344 states and 467 transitions. [2023-11-06 22:15:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:15:55,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2023-11-06 22:15:55,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:55,906 INFO L225 Difference]: With dead ends: 344 [2023-11-06 22:15:55,907 INFO L226 Difference]: Without dead ends: 194 [2023-11-06 22:15:55,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:15:55,908 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 10 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:55,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 713 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:15:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-06 22:15:55,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2023-11-06 22:15:55,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1967213114754098) internal successors, (146), 124 states have internal predecessors, (146), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2023-11-06 22:15:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 251 transitions. [2023-11-06 22:15:55,928 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 251 transitions. Word has length 141 [2023-11-06 22:15:55,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:55,929 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 251 transitions. [2023-11-06 22:15:55,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-06 22:15:55,930 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 251 transitions. [2023-11-06 22:15:55,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-06 22:15:55,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:55,932 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:55,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:56,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:56,142 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:56,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:56,143 INFO L85 PathProgramCache]: Analyzing trace with hash 120894754, now seen corresponding path program 1 times [2023-11-06 22:15:56,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:56,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483438289] [2023-11-06 22:15:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:56,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:56,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:15:56,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573000349] [2023-11-06 22:15:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:56,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:56,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:56,237 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:56,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:15:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:56,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 2534 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:15:56,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-06 22:15:56,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:56,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:56,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483438289] [2023-11-06 22:15:56,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:15:56,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573000349] [2023-11-06 22:15:56,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573000349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:56,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:56,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:15:56,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346655457] [2023-11-06 22:15:56,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:56,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:15:56,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:56,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:15:56,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:15:56,992 INFO L87 Difference]: Start difference. First operand 191 states and 251 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-06 22:15:57,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:57,316 INFO L93 Difference]: Finished difference Result 346 states and 457 transitions. [2023-11-06 22:15:57,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:15:57,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2023-11-06 22:15:57,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:57,319 INFO L225 Difference]: With dead ends: 346 [2023-11-06 22:15:57,319 INFO L226 Difference]: Without dead ends: 191 [2023-11-06 22:15:57,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:15:57,321 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 274 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:57,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 930 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:15:57,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-06 22:15:57,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-11-06 22:15:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 124 states have internal predecessors, (145), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2023-11-06 22:15:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 250 transitions. [2023-11-06 22:15:57,343 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 250 transitions. Word has length 141 [2023-11-06 22:15:57,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:57,343 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 250 transitions. [2023-11-06 22:15:57,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-06 22:15:57,344 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 250 transitions. [2023-11-06 22:15:57,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 22:15:57,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:57,347 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:57,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:57,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:57,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:57,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:57,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1915037087, now seen corresponding path program 1 times [2023-11-06 22:15:57,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:57,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145667893] [2023-11-06 22:15:57,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:57,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:57,649 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:15:57,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2448509] [2023-11-06 22:15:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:57,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:57,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:57,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:57,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:15:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:58,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 2606 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:15:58,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 22:15:58,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:58,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:58,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145667893] [2023-11-06 22:15:58,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:15:58,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2448509] [2023-11-06 22:15:58,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2448509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:58,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:58,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:15:58,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354696223] [2023-11-06 22:15:58,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:58,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:15:58,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:58,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:15:58,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:15:58,455 INFO L87 Difference]: Start difference. First operand 191 states and 250 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-06 22:15:58,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:58,720 INFO L93 Difference]: Finished difference Result 359 states and 474 transitions. [2023-11-06 22:15:58,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:15:58,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 157 [2023-11-06 22:15:58,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:58,724 INFO L225 Difference]: With dead ends: 359 [2023-11-06 22:15:58,725 INFO L226 Difference]: Without dead ends: 191 [2023-11-06 22:15:58,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:15:58,727 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 112 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:58,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1382 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:15:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-06 22:15:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-11-06 22:15:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 124 states have internal predecessors, (145), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (54), 49 states have call predecessors, (54), 49 states have call successors, (54) [2023-11-06 22:15:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 249 transitions. [2023-11-06 22:15:58,756 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 249 transitions. Word has length 157 [2023-11-06 22:15:58,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:58,758 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 249 transitions. [2023-11-06 22:15:58,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-06 22:15:58,759 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 249 transitions. [2023-11-06 22:15:58,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-06 22:15:58,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:58,761 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:58,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:58,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:15:58,973 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:58,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:58,973 INFO L85 PathProgramCache]: Analyzing trace with hash 725110269, now seen corresponding path program 2 times [2023-11-06 22:15:58,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:58,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343944700] [2023-11-06 22:15:58,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:58,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:59,076 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:15:59,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577689303] [2023-11-06 22:15:59,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:15:59,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:59,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:59,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:59,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:15:59,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:15:59,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:15:59,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:15:59,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-06 22:15:59,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:59,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:59,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343944700] [2023-11-06 22:15:59,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:15:59,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577689303] [2023-11-06 22:15:59,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577689303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:59,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:59,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:15:59,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630961969] [2023-11-06 22:15:59,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:59,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:15:59,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:59,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:15:59,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:15:59,970 INFO L87 Difference]: Start difference. First operand 191 states and 249 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-06 22:16:00,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:00,474 INFO L93 Difference]: Finished difference Result 334 states and 442 transitions. [2023-11-06 22:16:00,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:16:00,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 172 [2023-11-06 22:16:00,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:00,478 INFO L225 Difference]: With dead ends: 334 [2023-11-06 22:16:00,478 INFO L226 Difference]: Without dead ends: 203 [2023-11-06 22:16:00,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:16:00,479 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 268 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:00,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1284 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:16:00,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-06 22:16:00,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2023-11-06 22:16:00,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 128 states have (on average 1.1875) internal successors, (152), 130 states have internal predecessors, (152), 55 states have call successors, (55), 18 states have call predecessors, (55), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2023-11-06 22:16:00,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 266 transitions. [2023-11-06 22:16:00,502 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 266 transitions. Word has length 172 [2023-11-06 22:16:00,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:00,503 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 266 transitions. [2023-11-06 22:16:00,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-06 22:16:00,503 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 266 transitions. [2023-11-06 22:16:00,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-06 22:16:00,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:00,506 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:00,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:00,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:16:00,717 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:00,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash -606014439, now seen corresponding path program 1 times [2023-11-06 22:16:00,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:00,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85460108] [2023-11-06 22:16:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:00,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:00,824 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:00,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729098508] [2023-11-06 22:16:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:00,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:00,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:00,826 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:00,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:16:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:01,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:16:01,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:01,740 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-06 22:16:01,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:01,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:01,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85460108] [2023-11-06 22:16:01,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:01,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729098508] [2023-11-06 22:16:01,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729098508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:01,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:01,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:16:01,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664024456] [2023-11-06 22:16:01,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:01,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:16:01,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:01,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:16:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:16:01,744 INFO L87 Difference]: Start difference. First operand 203 states and 266 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:16:02,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:02,116 INFO L93 Difference]: Finished difference Result 383 states and 507 transitions. [2023-11-06 22:16:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:16:02,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2023-11-06 22:16:02,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:02,119 INFO L225 Difference]: With dead ends: 383 [2023-11-06 22:16:02,119 INFO L226 Difference]: Without dead ends: 219 [2023-11-06 22:16:02,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:16:02,121 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 21 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:02,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1066 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:16:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-06 22:16:02,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 207. [2023-11-06 22:16:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 55 states have call successors, (55), 18 states have call predecessors, (55), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2023-11-06 22:16:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 271 transitions. [2023-11-06 22:16:02,144 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 271 transitions. Word has length 202 [2023-11-06 22:16:02,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:02,144 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 271 transitions. [2023-11-06 22:16:02,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:16:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 271 transitions. [2023-11-06 22:16:02,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-06 22:16:02,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:02,148 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:02,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:02,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:02,360 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:02,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:02,360 INFO L85 PathProgramCache]: Analyzing trace with hash 995056667, now seen corresponding path program 1 times [2023-11-06 22:16:02,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:02,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745803850] [2023-11-06 22:16:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:02,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:02,472 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:02,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040974128] [2023-11-06 22:16:02,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:02,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:02,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:02,474 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:02,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:16:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:03,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:16:03,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-06 22:16:03,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:03,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:03,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745803850] [2023-11-06 22:16:03,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:03,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040974128] [2023-11-06 22:16:03,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040974128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:03,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:03,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:16:03,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305296126] [2023-11-06 22:16:03,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:03,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:03,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:03,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:03,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:03,274 INFO L87 Difference]: Start difference. First operand 207 states and 271 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:16:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:03,322 INFO L93 Difference]: Finished difference Result 379 states and 500 transitions. [2023-11-06 22:16:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:16:03,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2023-11-06 22:16:03,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:03,326 INFO L225 Difference]: With dead ends: 379 [2023-11-06 22:16:03,326 INFO L226 Difference]: Without dead ends: 211 [2023-11-06 22:16:03,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:03,330 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 3 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:03,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 707 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:16:03,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-06 22:16:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2023-11-06 22:16:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 136 states have internal predecessors, (159), 55 states have call successors, (55), 18 states have call predecessors, (55), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2023-11-06 22:16:03,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 273 transitions. [2023-11-06 22:16:03,353 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 273 transitions. Word has length 202 [2023-11-06 22:16:03,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:03,354 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 273 transitions. [2023-11-06 22:16:03,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:16:03,354 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 273 transitions. [2023-11-06 22:16:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-06 22:16:03,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:03,357 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:03,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:03,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:03,573 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:03,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:03,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1948525411, now seen corresponding path program 1 times [2023-11-06 22:16:03,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:03,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856476741] [2023-11-06 22:16:03,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:03,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:03,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:03,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292356879] [2023-11-06 22:16:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:03,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:03,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:03,674 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:03,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:16:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:04,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 3021 conjuncts, 111 conjunts are in the unsatisfiable core [2023-11-06 22:16:04,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:06,093 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 22:16:06,094 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2023-11-06 22:16:06,104 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 22:16:06,105 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-11-06 22:16:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 136 proven. 4 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-06 22:16:06,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:07,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:07,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856476741] [2023-11-06 22:16:07,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:07,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292356879] [2023-11-06 22:16:07,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292356879] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:07,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:16:07,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-06 22:16:07,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114350993] [2023-11-06 22:16:07,590 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:07,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:16:07,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:07,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:16:07,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2023-11-06 22:16:07,593 INFO L87 Difference]: Start difference. First operand 209 states and 273 transitions. Second operand has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 18 states have internal predecessors, (92), 7 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) [2023-11-06 22:16:09,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:12,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:14,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:16,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:18,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:20,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:23,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:25,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:27,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:16:29,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:31,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:36,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:38,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:40,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:43,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:45,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:47,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:16:50,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:16:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:51,867 INFO L93 Difference]: Finished difference Result 495 states and 659 transitions. [2023-11-06 22:16:51,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-06 22:16:51,868 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 18 states have internal predecessors, (92), 7 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) Word has length 202 [2023-11-06 22:16:51,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:51,871 INFO L225 Difference]: With dead ends: 495 [2023-11-06 22:16:51,871 INFO L226 Difference]: Without dead ends: 337 [2023-11-06 22:16:51,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 242 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=344, Invalid=2625, Unknown=1, NotChecked=0, Total=2970 [2023-11-06 22:16:51,874 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 386 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 3404 mSolverCounterSat, 130 mSolverCounterUnsat, 39 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 3573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3404 IncrementalHoareTripleChecker+Invalid, 39 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:51,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1146 Invalid, 3573 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 3404 Invalid, 39 Unknown, 0 Unchecked, 42.0s Time] [2023-11-06 22:16:51,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-06 22:16:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 263. [2023-11-06 22:16:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 168 states have (on average 1.1845238095238095) internal successors, (199), 172 states have internal predecessors, (199), 68 states have call successors, (68), 23 states have call predecessors, (68), 26 states have return successors, (76), 67 states have call predecessors, (76), 66 states have call successors, (76) [2023-11-06 22:16:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 343 transitions. [2023-11-06 22:16:51,924 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 343 transitions. Word has length 202 [2023-11-06 22:16:51,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:51,926 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 343 transitions. [2023-11-06 22:16:51,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 18 states have internal predecessors, (92), 7 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) [2023-11-06 22:16:51,926 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 343 transitions. [2023-11-06 22:16:51,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-06 22:16:51,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:51,932 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:51,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:52,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:16:52,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:52,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:52,147 INFO L85 PathProgramCache]: Analyzing trace with hash 425026459, now seen corresponding path program 1 times [2023-11-06 22:16:52,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:52,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075186221] [2023-11-06 22:16:52,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:52,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:52,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:52,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563136405] [2023-11-06 22:16:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:52,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:52,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:52,254 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:52,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:16:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:53,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 3024 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:16:53,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-06 22:16:53,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:53,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075186221] [2023-11-06 22:16:53,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:53,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563136405] [2023-11-06 22:16:53,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563136405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:53,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:53,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:16:53,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975275974] [2023-11-06 22:16:53,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:53,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:16:53,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:53,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:16:53,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:53,052 INFO L87 Difference]: Start difference. First operand 263 states and 343 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:16:53,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:53,135 INFO L93 Difference]: Finished difference Result 486 states and 638 transitions. [2023-11-06 22:16:53,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:16:53,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2023-11-06 22:16:53,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:53,139 INFO L225 Difference]: With dead ends: 486 [2023-11-06 22:16:53,139 INFO L226 Difference]: Without dead ends: 275 [2023-11-06 22:16:53,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:16:53,141 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 6 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:53,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 962 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:16:53,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-11-06 22:16:53,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2023-11-06 22:16:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 176 states have (on average 1.1875) internal successors, (209), 180 states have internal predecessors, (209), 68 states have call successors, (68), 23 states have call predecessors, (68), 26 states have return successors, (76), 67 states have call predecessors, (76), 66 states have call successors, (76) [2023-11-06 22:16:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 353 transitions. [2023-11-06 22:16:53,175 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 353 transitions. Word has length 202 [2023-11-06 22:16:53,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:53,179 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 353 transitions. [2023-11-06 22:16:53,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:16:53,179 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 353 transitions. [2023-11-06 22:16:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-06 22:16:53,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:53,182 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:53,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:53,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:53,400 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:53,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:53,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1913156837, now seen corresponding path program 1 times [2023-11-06 22:16:53,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:53,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675573022] [2023-11-06 22:16:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:53,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:53,510 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:53,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223933596] [2023-11-06 22:16:53,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:53,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:53,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:53,512 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:53,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:16:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:54,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:16:54,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:54,377 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-06 22:16:54,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:54,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:54,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675573022] [2023-11-06 22:16:54,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:54,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223933596] [2023-11-06 22:16:54,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223933596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:54,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:54,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:16:54,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78532172] [2023-11-06 22:16:54,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:54,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:54,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:54,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:54,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:54,381 INFO L87 Difference]: Start difference. First operand 271 states and 353 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:16:54,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:54,444 INFO L93 Difference]: Finished difference Result 483 states and 632 transitions. [2023-11-06 22:16:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:16:54,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2023-11-06 22:16:54,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:54,463 INFO L225 Difference]: With dead ends: 483 [2023-11-06 22:16:54,463 INFO L226 Difference]: Without dead ends: 264 [2023-11-06 22:16:54,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:54,466 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 2 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:54,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 710 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:16:54,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-06 22:16:54,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263. [2023-11-06 22:16:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 168 states have (on average 1.1726190476190477) internal successors, (197), 172 states have internal predecessors, (197), 68 states have call successors, (68), 23 states have call predecessors, (68), 26 states have return successors, (76), 67 states have call predecessors, (76), 66 states have call successors, (76) [2023-11-06 22:16:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 341 transitions. [2023-11-06 22:16:54,499 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 341 transitions. Word has length 202 [2023-11-06 22:16:54,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:54,500 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 341 transitions. [2023-11-06 22:16:54,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:16:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 341 transitions. [2023-11-06 22:16:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-06 22:16:54,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:54,502 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:54,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:54,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:54,714 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:54,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:54,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2072388371, now seen corresponding path program 1 times [2023-11-06 22:16:54,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:54,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702553099] [2023-11-06 22:16:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:54,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:54,862 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:54,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988184424] [2023-11-06 22:16:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:54,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:54,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:54,865 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:54,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:16:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:55,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-06 22:16:55,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 157 proven. 8 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-06 22:16:56,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:58,486 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse6 (+ |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.offset| 80))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse6)) (.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse6))) (and (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_9| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_9| Int)) (let ((.cse0 (+ 32 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_9|))) (let ((.cse3 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_9|) .cse0))) (or (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_9|) .cse0) .cse1)) (not (= .cse2 .cse3)) (= .cse3 0))))) (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_9| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_9| Int)) (let ((.cse5 (+ 32 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_9|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_9|) .cse5))) (or (not (= .cse4 .cse1)) (not (= .cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_9|) .cse5))) (= .cse4 0)))))))) is different from false [2023-11-06 22:16:58,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:58,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702553099] [2023-11-06 22:16:58,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:58,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988184424] [2023-11-06 22:16:58,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988184424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:58,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:16:58,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-06 22:16:58,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596517665] [2023-11-06 22:16:58,533 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:58,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:16:58,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:58,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:16:58,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=238, Unknown=1, NotChecked=30, Total=306 [2023-11-06 22:16:58,535 INFO L87 Difference]: Start difference. First operand 263 states and 341 transitions. Second operand has 16 states, 15 states have (on average 6.8) internal successors, (102), 16 states have internal predecessors, (102), 9 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) [2023-11-06 22:17:03,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:03,901 INFO L93 Difference]: Finished difference Result 830 states and 1139 transitions. [2023-11-06 22:17:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-06 22:17:03,903 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.8) internal successors, (102), 16 states have internal predecessors, (102), 9 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) Word has length 209 [2023-11-06 22:17:03,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:03,909 INFO L225 Difference]: With dead ends: 830 [2023-11-06 22:17:03,909 INFO L226 Difference]: Without dead ends: 627 [2023-11-06 22:17:03,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=322, Invalid=2131, Unknown=1, NotChecked=96, Total=2550 [2023-11-06 22:17:03,913 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 417 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 3421 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 3594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 3421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:03,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 2225 Invalid, 3594 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [173 Valid, 3421 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 22:17:03,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2023-11-06 22:17:03,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 583. [2023-11-06 22:17:03,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 404 states have (on average 1.1732673267326732) internal successors, (474), 415 states have internal predecessors, (474), 122 states have call successors, (122), 40 states have call predecessors, (122), 56 states have return successors, (218), 127 states have call predecessors, (218), 119 states have call successors, (218) [2023-11-06 22:17:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 814 transitions. [2023-11-06 22:17:03,995 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 814 transitions. Word has length 209 [2023-11-06 22:17:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:03,995 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 814 transitions. [2023-11-06 22:17:03,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.8) internal successors, (102), 16 states have internal predecessors, (102), 9 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) [2023-11-06 22:17:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 814 transitions. [2023-11-06 22:17:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-06 22:17:03,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:03,999 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:04,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:04,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:17:04,211 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:04,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash -151605043, now seen corresponding path program 1 times [2023-11-06 22:17:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:04,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765605036] [2023-11-06 22:17:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:04,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:04,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:04,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49966986] [2023-11-06 22:17:04,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:04,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:04,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:04,303 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:04,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e3ab4a0-5090-4f2b-92d3-1be2d3cccdd9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:17:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:05,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 126 conjunts are in the unsatisfiable core [2023-11-06 22:17:05,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:05,229 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:17:05,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-06 22:17:07,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:17:14,337 WARN L861 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_int| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|)))) is different from true [2023-11-06 22:17:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 139 proven. 20 refuted. 0 times theorem prover too weak. 55 trivial. 3 not checked. [2023-11-06 22:17:42,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:17:44,556 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_10| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_10| Int)) (not (= (select (select |c_#memory_int| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) (+ 56 |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.offset|)) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.base_10|) (+ 8 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_backpointers~0#1.offset_10|))))) is different from false [2023-11-06 22:17:44,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:44,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765605036] [2023-11-06 22:17:44,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:44,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49966986] [2023-11-06 22:17:44,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49966986] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:17:44,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:17:44,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2023-11-06 22:17:44,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176256443] [2023-11-06 22:17:44,582 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:17:44,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 22:17:44,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:44,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 22:17:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=652, Unknown=21, NotChecked=106, Total=870 [2023-11-06 22:17:44,584 INFO L87 Difference]: Start difference. First operand 583 states and 814 transitions. Second operand has 29 states, 27 states have (on average 4.333333333333333) internal successors, (117), 26 states have internal predecessors, (117), 12 states have call successors, (30), 7 states have call predecessors, (30), 10 states have return successors, (28), 12 states have call predecessors, (28), 12 states have call successors, (28) [2023-11-06 22:17:46,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:17:48,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:17:50,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:17:51,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:17:59,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:01,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:11,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:14,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:24,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:26,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:28,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:30,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:33,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:35,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:41,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:43,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:45,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:49,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:51,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:56,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:58,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:00,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:02,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:04,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:06,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:09,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:11,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:13,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:15,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:17,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:19,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:22,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:24,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:27,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:29,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:39,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:41,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:44,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:46,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:49,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:51,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]